Synergistically Halogenated and Methoxylated Thiophene Additive Enables High‐Performance Organic Solar Cells

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

Abstract Morphology control plays a key role for improving efficiency and stability of bulk heterojunctions (BHJ) organic solar cells (OSCs). Halogenation methoxylation are two separate ways successfully adopted in additives morphology optimization. In this work, these strategies combined together. A series halogenated methoxylated thiophenes is designed synthesized as volatile to the evolution BHJ morphology. Specifically, addition 2,5‐diiodo‐3,4‐dimethoxythiophene (MT‐I) prominently improves performance photostability OSCs. Computational simulations reveal noncovalent interactions MT‐I with active layer materials that corresponds inhibition excessive aggregation behavior PM6 Y6 during film‐forming process, facilitating favorable phase separation enhanced molecular stacking. Consequently, PM6:Y6‐based binary OSCs treatment achieves high PCE 17.93%. Furthermore, demonstrates broad feasibility across diverse high‐efficiency OSCs, leading superior photovoltaic (PCE over 18%). This study offers valuable guidance design application high‐performance future endeavors.

Language: Английский

Tetracyanobutadiene- and dicyanoquinodimethane-functionalized D′-A-(π)-D-(π)-A-D′ type indacenodithiophene small-molecule chromophores: Synthesis, optoelectronic properties and photovoltaic response

Journal of Photochemistry and Photobiology A Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 116376 - 116376

Published: March 1, 2025

Language: Английский

Tetracyanobutadiene- and Dicyanoquinodimethane-Functionalized D'-a-(Π)-D-(Π)-a-D' Type Indacenodithiophene Small-Molecule Chromophores: Synthesis, Optoelectronic Properties and Photovoltaic Response

Published: Jan. 1, 2024

Language: Английский